Trace oil igniting coal dust firing device for multiple oil guns

Abstract

The invention provides a trace oil igniting coal dust firing device for multiple oil guns, relates to a firing device, and solves the problem of easily failed ignition due to the fact that distance between a main oil gun and an auxiliary oil gun on the same side is large, and the main oil gun and an auxiliary oil gun on the opposite side are not alternately arranged in the prior firing device. The main oil gun and the auxiliary oil gun on the opposite side are alternately and oppositely arranged on side walls of a concentrated coal dust pipeline; distances of crossing points among the centralline of the main oil gun, the central line of the auxiliary oil gun on the same side and the central line of the concentrated coal dust pipeline are between 80 and 100mm; and distances of the crossing points of the central line of the main oil gun, the central line of the auxiliary oil gun on the opposite side and the central line of the concentrated coal dust pipeline are between 500 and 700mm. The distance between the main oil gun and the auxiliary oil gun on the same side is close so as to ensure that fuel which is sprayed from the auxiliary oil gun and has excellent atomization can be directly sprayed into high temperature flame generated by ignition of the main oil gun for fierce firing, and the flame generated after fuel sprayed from the main oil gun and the auxiliary oil gun is fired can support each other to form whole flame which has large length and roughness and good rigidity and can ignite high concentrated coal dust.

Description

technical field

[0001] The invention relates to a combustion device, in particular to a pulverized coal combustion device with multiple oil guns and micro-oil volume ignition applied to a W-shaped flame boiler. Background technique

[0002] Large-scale power plant boilers consume a lot of oil during ignition and low-load stable combustion. In order to save fuel, power generation companies shift the focus of fuel saving from low-load stable combustion to boiler ignition and shutdown (oil consumption accounts for 60% when power plant boilers start and stop. , low-load stable fuel consumption accounts for 40%). Therefore, the research on micro-oil ignition combustion technology is of great significance to the development of my country's electric power industry and the entire national economy. The Chinese patent application number is ZL200720170025.1 utility model patent. This design arranges the main oil gun and auxiliary oil gun in sequence along one side of the burner. The ...

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